Sink strainer



April 1940- M. F. SCHAIBLE I 2,197,083

SINK STRAIIER Filed July 11, 1938 INVENTOR Mic/20! l-T Sc/IaM/ ATTO Patented Apr. 16, 1940 UNlTED STATES PATENT OFFICE I 'alsmssp I SINK s'rRAIivER 7 Michael F. Schaible, Cincinnati, ohm I 1 ApplicationJuly n, 1933, Serial No. 218,486

- -'6 Claims; (01. 4-287);

This invention relates to 'improvements'in the construction of strainers and waste valves. for

use in sinks or thelike.

An object of the invention is to .provide a combination sink strainer and waste valve, the valve having two positive normal positions, one fully open and the other fullyclosed. I

A further object of the invention-is to provide a combination'sink strainer and waste valve which maybe easily and inexpensively manufactured and assembled and which may. be easily disas sembled for the purpose. of cleaning.

Still a further object is to provide a combina tion sink strainer and'waste valve in which the 4 valve may be :operated independently of the strainer so that the strainer may remain stationary when said valve is operated.

These and other objects are attained by the means described herein, and disclosed in the ac- 2Q companying drawing, in which:

Fig. 1. is a sectional View of the strainer and valve comprising the invention, the valvebeing in an open position.

Fig. 2 is similar to Fig. 1, showing the valve in a closed position. g 1

, Fig. 3 is an assembly view of the valveand valve stem structure comprising the invention.

Fig. 4 is a view taken on line 4 -4 of Fig. 3.

Fig. 5 is; anassembled view of the valve and valve ster'n cornprising the invention, partly in cross-section for clarity of detail.

Fig.6 is a fragmental view showing adetail of the invention.

Thedrain comprises an outer shell Ill having 5 an annular flange I l disposed to engage the edges of a suitable: aperture I2, provided through the bottom N2 of a sink, not shown. The outer edge of shell it is provided with a threaded portion.

#3 for cooperating with a suitable clamping nut I4 for securing shell Ill to the sink. Any suit; able packing gland or washer asv I5 may be used to form a fluid. tight connection between shell H] and sink l2.

The lower. edge of shell Ill converges to form a constricted outlet passageway It, the outer wall of which is threaded as at ll for suitable con nections to a waste pipe or trap, not'shown.

An annular valve seat-|8. is provided internally;

of constricted passageway It, said seat tapering inward from a point of maximum width where it intersects the convergent bottom I9 .of shell l0.

A strainer basket 20 isremovably positioned within shell [,0 and maintained in. spaced relationship therewith by means of the out turned annular flange 21 whichcooperates with an annular seat 22 provided in shell lll..- Said strainer is provided with suitable drain holes 5%. -An up ward extending abutment 23 is provided centrally of strainer basket 20 being secured in place by any suitable means such as-by welding lip 24 to. the 5 under side of said basket.

, An' annular valve 26 is adapted to cooperate With valve seat 18 whereby a fluid tight seal is provided when the valve is seated as shown in Fig.2.

:Valve 26 is carried by a composite valve stem 21 which'comprises a lower section 28 and an upper section 29 which is pivotally connected to said lower section. Lower section-28may be made integral with valve -26 as shown in Figs. 3 and 5.; 20 A transverse cross-sectional plane through said I valve stem is complementary in shape to aperture 25 which extends throughabutment 23, whereby to permit said valve stem to be moved vertically throughaperture 25 but precluded from being ro- 25 tated within said aperture. A pin-3i] is fixed rela- I tive to bottom valve stem section 28 and extends outwardtherefrom; asshown in Figs. 3 and 5, Pin 30 maybe formed integrally with section 28 or it may comprise a separate pin secured to sec- 30 tion 28 by means of a weld or a force fit.

Upper valve" stem section 29 is secured in a swivel relationship with lower section 28 by means of pin. 3ll, the free upper end ofwhich is peened over the upper end of section 29, as clearly shown 35 inFig.5. A suitable handle or; knob 31 may be fastened to the upper end of section,29 by any suitable means such as threads 40. The peened end of pin 30 may be housed within the knob 3! as 49' 1 Valve 25 may be moved only vertically towards or away from its seat l8, being prevented from] being rotated relative thereto by reason of the non-circular shape of valve stem 2'! and aperture 25 within which ,itymoves. -The strainer acts, .5

lifts valve 26 from its seat l8. Valve 26 may be retained in an unseated or open position by withdrawing the swivel section 29 of composite valve stem 2i completely out of aperture 25 and then turning said section so as to be in nonalignment with said aperture. In this manner said swivel section 29 is supported on abutment 23 as clearly shown in Fig. 1. This is the -full open. position.

Valve 26 is caused to seat by turning knob 3! a suflicient amount to align the upper section 29 with aperture 25 thereby permitting section 29 to drop into said aperture of the abutment v23, as clearly shown in Fig. 2. This is the fully closed position of said valve. It should be here noted that valve 23 has but two normal positions, via, either fully open or fully closed. In this way, troublesome intermediate settings have been eliminated and a positive acting waste valve is simply provided.

If desired, an auxiliary strainer 33 may be placed in the lower end of outlet passageway [6, said auxiliary strainer being supported by suitable means such as annular flange 34.

The entire valve assemblage and strainer basket may be removed by lifting up on knob 3| so that the upperface 35 of valve 26 contacts the bottom of said basket whereby the entire assemblage may be removed from shell l0 thereby permitting access to auxiliary strainor 33 and to valve seat lfifor cleaning purposes and the like.

From the foregoing it is' obvious" that I have provided a simple, yet positive acting sink strainer and waste valve assembly which may be easily manufactured and assembled, and which, once assembled, is trouble free since there are no pins, slots or notches which may become damaged.

Further, it should be noted that I have provided a drain valve which is not given a rotary motion relative to its seat when it is seated or unseated, since valve .26 is constrained to move vertically toward or away from its seat [8 whereby undue wear between said valve and its seat is eliminated. Further, I have effectively eliminated any relative motion between strainer basket 20 and the valve and/or valve stemwhen said valve isbeing opened or closed.

It is to be understood that various modifications and changes in the structural details of the device may be made, within the scope of the appended claims, without departing from the spirit of the invention.

What is claimed is:

1. In a device of the class described a waste drain valve comprising in combination an outer shell adapted to be secured within the drain aperture of a sink, the lower walls of said outer shell converging to form a constricted valve seat, a strainer basket adapted to be removably positioned within said outer shell, said strainer basket having an upwardly extending abutment centrally disposed thereof, an aperture extending vertically through said abutment, said aperture being of greater length than breadth, a valve adapted to cooperate with said valve seat carried on a composite valve stem, a transverse cross sectional plane of which is complementary to the aperture through said abutment throughwhich-it extends, the upper end of said I I valve stem being pivotally connected to the lower portion thereof whereby an abutment engaging face is provided to engage said abutment when said valve stem has been withdrawn. from said abutment a distance sufiicient to unseat said valve,

2. The combination in a sinkhaving a drainoutlet of a combined drain and strainer comprising. an outer shell membersecured within said drain outlet, the lower walls of said shell converging to form a constricted outlet, a strainer basket removably positioned in spaced relationship within said shell, an abutment centrally disposed of said strainer, a valve for openingand closing said constricted outlet, a nonextending upwardly through said basket and associated abutment, the upper section of said composite valve stem being adapted to be swiveled relative to the lower section about a common vertical axis for disali'gning the upper section relative to the'lower section to provide an overhanging face, 'said'overh'anging face adapt circular composite valve actuating stem, slidably I shell and having a non-circular opening therein theshell, and a valve for closing the aperture in the shell bottom and comprising a stem conforming in cross-section with the shape of the opening in the strainer and slidable longitudinally of itself in said opening, said stem comprising portions movable relative to one another,

' and being so related that by turning the. one portion thereof same provides abutment means for cooperating with the strainer for suspend-- ing the valve above the aperture'in the shell; 4. In combination with a sink having a drain outlet, of a hollow shell secured within said outlet, the lower walls of said shellconverging inward to form a constricted out1et,-"a strainer re-,

in, adapted for alignment with the aperture in the shell bottom when the strainer is positioned relative to said lower portion for providing an abutment ledge engageable with said "strainer for maintaining said valve in spaced relationship with said constricted outlet.

5. In a device of the class described a waste drain assembly comprising in combination an outer shell the Walls of which converge to form a valve seat, means 'forsecuring' said shell to a sink, a strainer basket adapted to be removably positioned within said shell, abutment means carriedJ'by said basket, a valve adapted to-engage said valve seat, said valve having "but two normal positions relative to said seat, one seated tending longitudinally through said abutment means and Strainer, anon-circular two-piece valve actuating stem slidably extending through said basket and said abutment means, a pin,

70 therewith, the other unseated, a guideway ex said valve stem comprising an upper section and a lower section, said pin being non-revolvably fixed relative *toone section and revolvably secured to the other section for providing an axis about which said sections may be relatively rotated, the lower section being fixed relative to the valve, the upper section being freely rotatable relative to the lower section forproviding an abutment ledge to engage the upper face'of said abutment means for maintaining said valve in an open, unseated position, said valve stem and guideway being complements and non-circular in transverse cross section for permitting only longitudinal relative motion between the lower section of said valve stem, said abutmen I means and said valve seat. 7 I

6. In a device of the class described, a Waste drain assembly comprising in combination an upper shell the walls of which converge to form' a valve seat, means for securing saidshell to a sink, a strainer basket removably positioned withinsaid shelhabutment means carried by said basket, a non-circular aperture extending verticall'y through said abutment means, a valve adapted to engagesaid valve seat, said valve having but two normal positions relative to said seat, one seated therewith, the other unseated, a valve stem conforming in cross section with the shape of the aperture through saidabutment means, said stem comprising an upper and a lower section, means interconnecting said sections and comprising a longitudinal axis about which said sections may be rotated relative to one another .for disposing the non-circular cross sectional areas of each of .said sections in vertical alignment or disalignment, both sections being vertically'shiftable through-said abutment aperture when in vertical alignment; the. upper section adapted to engage the upper surface of said abutment when said sections are disaligned, for positioning the valve in an unseated condition. I l l MICHAEL F. SCI-IAIBLEI 

